Preparations are underway for one of the five pillars of the Islamic faith.
More than two million Muslims from around the world are expected to descend on the cities of Mecca and Medina in Saudi Arabia for the annual Hajj pilgrimage later this month.
Saudi military troops have performed in a ceremony to review forces set to be involved in the 2019 event.
It took place at the Saudi Special Forces camp near the Mecca, the holiest place in Islam.
This year's Hajj has faced heavy criticism from Muslims around the world, including some in Australia, who are boycotting what is one of the central pillars of Islam.
Critics are speaking out against the killing of journalist Jamal Khashoggi and civilian deaths in Yemen, where Saudi Arabia is the lead partner in a Coalition of forces involved.
But Saudi Arabia has also received plenty of praise for its plans for a safe event.
Hajj Deputy Minister Dr Abdul Fattah Mashat this year launched a project to reduce temperatures in Makkah's holy sites by coating the asphalt.
It's hoped to reduce the temperature by 15-20 degrees.
Saudi King Salman bin Abdulaziz Al Saud is paying for all travel and accommodation costs, a bill likely to be more than $1 million.